Electro-valve-operating device for elevators



(No Model.) 2 sheets-sheen 2.

C. W. BALDWIN. ELECTRO VALVE OPERATING DEVIGEEOR ELEVATOES.

Patented Dec. 1o, 1889.

w mf Mm 7 I UNTTED STATES PATENTV OFFICE.

CYRIIS \V. BAIJDWIIN, OF YONKERS, NEV YORK, ASSIGN OR TO THE IIY- DRAIILIC EIEVATOR COMPANY, OF CHICAGO, ILLINOIS.

ELECTRO-VALVE-OPERATING DEVICE FOR ELEVATORS.

SPECIFICATION forming part of Letters PatentlNo. 417,132, dated December 10, 1889.

Original application filed April 19, 1887. Serial No. 235,383. Divided and this application tiled September l2, ISS- Serial No.

285,200. (No model.)

' citizen of the United States, residing' at Yonlc controlling-valve G.

vview of the brake.

ers, Westchester county,vState of New York, have invented certain newand useful Iin-l provements in Electric-ValveOperating Dcvices for Elevators, fullyset forth in lthe fol lowing specification and represented in the accompanying drawings.

The present invention relates to that class V.ot elevators in which the cage is connected with a piston in a cylinder moved by liquid under pressure and provided with a valvecontrolling device for directing and controlling the liquid to and from the cylinder; and

.it consistsin certain improvements, fully set forth hereinafter, whereby'to facilita-te the operation of the apparatus.

In the accompanying drawings, Figurel is a sectional elevation of van elevator, showing` my improvements in connection with one class of hydraulic elevator; and Fig. 2 is an en larged detail of the electrical controlling device in the cage. Fig. 3 is an enlarged side Fig. l is a section on the line 4 4f, Fig. 3.

The cylinder of the elevatoie11gine is shown as arranged vertically; but in some in stances it may be horizontal, the piston being connected with the rods (l, carrying' a crosshead supporting a pulley 2,under which pass. the iiexible suspensories 3, supporting the elevator-cage 5 is the ordinary circulating-pil)e, connected with the top and bottom of the cylinder B and in communication with the casing F of a A supply-pipe (3 from an upper reservoir 7 or other source ot' supplyalso connnunicates with the valvealfasing in a manner well understood.

It is obvious that any other form ol elevator-engine may be employedwas, for instance, the one particularly set forth, described, and claimed in an application filed by me April 19, 1887, Serial No. 235,383, of which this is a division.

The valve G has usually been operated through mechanical connections from the cage; but the present invention consists, essentially, in employing electrical devices for operating said valve from the cage. These electri vot the cage.

Different forms of motors, connections, and

switches will suggest themselves to .any one skilled in the art.

In that taken for illustration there is provided a hand-lever 29, constituting an elec* tric switch, in connection with the terminals h 'L' of two flexible conductors c (I, extending to the battery or generator L and field-magnet of the motor G', and with three contactbuttons c f g, connected with the electrical conductors a l), leading -to connections with the armature of the motor. As shown, the armature is a revolving armature carrying a driving-pulley 70, from which a chain or belt 7l leads to the pulleyA 66, that is provided with a pinion 15, gearing with the rack upon the valve-stein, so that when the motor revolves in one direction it raises the valve, and when in the other direction it reverses it.

As shown in Fig. 2, the lever is shown as being above its normal position to permit the contacts to be better illustrated. Then the lever 2f) is in a mid-position or horizontal, it is out of connection with all the contacts, and the parts are stationary, Then the lever is depressed at the end from a mid-position to bring the pair ot contacts 7L 17 into contact with the pair ot contacts f e, a circuit is completed through the conductors in one direction and the armature is revolved to close the valve, and the parts are kept in this position until the desired amount of movement in this direction is effected. Ihen the valve reaches its proper position, it is arrested and held by simply moving the lever 29 to a midposition. Theil the valve is-to be opened, the lever is raised from its mid-positionto bring the contacts 't' 7L into contact with the ICO contacts f g, when the circuit is completed. To impel the armature in the opposite direction, the lever is held in place until the valve is in proper position, when it is shifted and brought to a horizontal position.

In practice I prefer to combine with the valve and its operating connections a brake I, of a suitable character, so arranged as to be applied as the liquid is eut oif from the cylinder, whereby the cage is clamped in position by the time the valve has been moved to become completely closed, so that it cannot be disturbed by the action of momentum or other source of power.

Different forms of brakes and operating means may be employed. In the drawings there is shown.a brake corresponding substantially with thatfset forth in Letters Pat- Ient No. 358,322, granted to ine February 22, 1887, and hence no detailed description thereof need be here given.

In the .presentinst-ance the coinLiecting-rod 2S has an elongated slot yy,1'eceiving a pin 41 upon the hand-lever 29, and the contacts and 'terminals kof the electrical valve-controlling device, when arranged asset fort-11,caus'e the direction of rotation of the armature of tli'e'inotor to be rever'sedaccording to the position to which the hand-lever 29 is set by the operator, who brings the lever to a central position and 'stops the motor as soon asl the controlling-valve has assumed a proper position, to be determined by the speed vor position ofthe cage. Spings GO tend to hold the hand-lever in a central position, with the electrical connection broken and the motor at rest.

When .the lever 2t) is moved to close the circuit in one direction so as to start the inotor Lto close the Valve G, the slot y will permit the circuit to be completed and the valve to be started before the brake begins to grip the guide 23; but before the valve is vcoinpletely vclosed the pin 41 will Contact with the end of the slot in the connectingaod 28, and the brake will rmly `grip theguide and arrest the motion of the cage before or at-the time of thefcomplete closing of the valve. In the `position shown in Fig. 2 the lever 'has .been moved from a central or stop position over vthe contacts f c, thereby starting the motor and the valve, and the pin 'tl'has been lever to a central position the circuit will be first completed and the valve started before the brake begins to bear on the brake-bar,

.and the valve will be brought to a closed position asth'e brake is fully applied. Like .operations take place upon reverse movements of the lever.

' The electrical conductors are combined for a greater portion of their length in aflexible cable K, supporte-d midway of its length in the well by a bracket 50.

I do not here claim, broadly, an operating device lconnected to give the stopping and starting dev-ice the lead 'of the brake in 'plying the latter in veither direction, as this constitutes the subject of a separate application for Letters Patent, Serial No. 300,280.

That I claim is- 1. The combination, with an elevator engine, cage, and controlling-valve, of a brake and brake-operating devices carried by the cage, an electromotor, and connections between the latter -afnd the valve, and iiexible conductors extending from the motor to the brake-'operating devices, and vcontacts Aafrranged to 'com-plete the vcircuit through said 'connections in one direction or the other, accordingl-y as the brake-operating device is shifted, substantially as described.

2. llhe combination of the cage v,of an ele- .vator stopping and starting device, inotor therefor, brake, and an operating Qdevi'cefconnected with the brake and embodying a switch constructed to start the stopping Avand starting device in advance of the `application of the brake, substantially as described.

In testimony whereof I have signed my naine to this specification in the presence of two subscribing Witnesses.

'CYR'US W. BALDWIN. Witnesses:

ARTHUR W. BURNS, W. F. RILEY. 

